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Jan. 29, 1929. 1,700,398

J. M. BOCZEK BRICK CHECKER WORK Filed March 22, 1928 2 Sheets-Sheet l 1 JNVENTOR.

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ATTORNEQ Jan. 29, 1929. 1,700,398

J. M. BOCZEK BRICK CHECKER WORK Filed March 22, 1928 2 Sheets-Sheet I N VEN TOR Ju Zzzw' WC. 25 0 @76 6 "3 \B BY ATTORNEX.

Patented Jan. 29, 1929.

JULIUS I. BOCZEK, OF CLEVELAND, OHIO.

BRICK GHECKER WORK.

Application filed March 22, 1928.

This invention relates to brick checker work for regenerative furnaces, and has more particular reference to improved checker work of this kind especially adapted for use in the stove compartments of an open hearth regenerative furnace.

The primary object of the present invention is to provide a brick checker Work of the above kind which is simple and durable in construction, easy and economical to install,

and eiiicient in service.

A more specific object is to provide an improved brick checker work adapted to be placed in the stove comparti .ents of an open hearth regenerative furnace and constructed in such manner that the vertical flues or channels extending through the checker work have effective communicating passages with each other, so that the heated products of combustion passing through the compartments in one direction can spread out over the entire crosssectional area, and so that the air or gas blast passing in the opposite direction can also pass from one flue to another and spread out over the entire cross-sectional area of the compartments, thereby enabling the bricks to quickly absorb heat from the heated products of combustion and enabling the air and gas to quickly absorb heat from the checker work.

The invention consists in the novel form, combination and arrangement of parts hereinafter more fully described, shown in the accompanying drawings and claimed.

In the drawings Figure 1 is a diagrammatic sectional view of an open hearth regenerative furnace having its stove compartments equipped With brick checker work constructed in accordance with the present invention;

Figure 2 is an enlarged fragmentary top plan view showing the checker work in one of the stove compartments;

Figure 3 is transverse section on line 3-3 of Figure 2;

Figure & is a transverse section on line 4-4 of Figure 2; and

Figure 5 is a longitudinal section on line 55 of Figure 2.

. Referring more in detail to the drawings, in order to illustrate a practical use of the present invention, a diagrammatic section of a Siemens-Martin open hearth furnace has been shown in Figure 1. The hearth has a bowl-shaped bed of a refractory substance supported by stout iron plates, under which currents of air are circulated to reduce their Serial No. 263,831.

temperature. At each end is a regenerative stove divided into two compartments 5 and 6, respectively for air and gas. As is Well known in the art, each stove has valves leading to the chimney and the air and gas supplies, not shown. In the diagram air and gas are being forced through the left compartments 5 and 6 so that they pass through the brick checker works therein, which are already hot, and mix at the ends of the channels 7 and 8, and combustion takes place at 9. The flames are deflected by the curve of the roof onto the bath of metal, and find their Way out through the channels 10 and 11 and the brick checker works in the right hand compartments 5 and 6, which were cooled by the last current from that end. At suitable intervals, the valves are reversed so that the brick checker works in the right hand compartments 5 and 6 heat the air and gas to a higher temperature than did the brick checker works in the left hand compartments 5 and 6. In this manner, the heat in the furnace is increased at every reversal until it reaches the point required. Furnaces of this kind are used in the manufacture of steel, and samples are extracted in a long ladle from time to time through the door 12.

The present invention aims to improve the form of brick checker works commonly employed in the compartments 5 and 6 of regenerative furnaces of the above type, whereby to materially improve the operation there of and cause extremely quick absorption of heat by the checker works from the heated products of combustion and from the checker works by the air and gas.

As shown, the present brick checker Work consists of a plurality of vertical longitudinal walls 13, transverse end walls 14, and transverse intermediate walls 15 arranged in spaced relation, the end and intermediate transverse walls being parallel with each other and extending right angles to the longitudinal walls which are also parallel with each other. In this manner, a plurality of vertical fines or channels are provided extending through the checker Work as at 16. Each longitudinal wall 13 is composed of a plurality of superimposed horizontal courses of bricks 17 of uniform size, and each intermediate transverse wall 15 embodies a plurality of similar vertically alined horizontal supporting bricks 18 laid across alternate courses of the longitudinal walls in spaced opposed relation, and further horizontal bricks 19 extending between and supported at their ends by alternate pairs of said opposed supporting bricks 18 as clearly shown in Figure t. In this way, a durable construction is had which is simple in character and which provides con'nnunicating passages 20 of relatively large size between adjacent ones of the vertical fines of channels 16. its clearly shown in Figure 5, the bricks 1? in the horizontal courses forming the longitudinal walls 13 are disposed in end to end abutting relation or with their ends abutting opposite sides of: the intersecting bricks 18 of the transverse intermediate walls, thereby forming a strong solid wall construction at each longitudinal wall.

The end transverse Walls 1% ei'nbody vertically alined horizontal supporting bricks 21 laid across alternate courses of the longitudinal walls in spaced opposed relation, and further horizontal bricks 22 extending between and supported at their ends by the pairs of opposed supporting bricks 21 in horizontal planes of each and. every alternate horizontal course of bricks in the longitudinal walls 13. In this way, the end walls are crmstrucled nearly solid, only small spaces 23 being left between adjacent ends of opposed ones of the supporting bricks :21 as shown clearly in Figure 3. [is will be apparent from the several views, all of the bricks in the checker work construction are of flat-laced form and of uniform size. They can be accordingly laid with facility by an ordinary brickdayer, and economical manufacture is insured.

As shown in. Figure 2, the end walls 141: are erected adjacent but in spaced relation to the end walls of the regenerative compartments or chambers of the furnace stoves, and the outer projecting ends of the supporting bricks 18 and 21 abut the side walls o'li said compartments or chambers, thereby leaving a space entirely about the checker work proper so that the hot products of combustion may pass thereto through the spaces or openings 23 and between the bricks 18 and 21, thereby thoroughly heating the checker work. [it the same time, the longer longitudine] walls 13 are e'll'ectively sustained by reason of the bricks 18 and 21 abutting the side walls of the chamber.

In order to permit free circulation of the air or gas and products 01" combustion from or into the spaces 24routwardly of the outer longitudinal walls 13, such spaces are placed into comn'iunication at their upper ends with the upper ends of the vertical fines or channels 16, by omitting alternate ones of the bricks in the next to the top course of each wall it?) as generally indicated at 2!. Obviously, this expedites spreading or the air or gas and the products of combustion out over the entire cross-sectional area of the regenerative compartments or chambers of the furnace stoves. The checker work in each compart ment is shown as erected upon the usual transverse supports or spaced arch Walls 26 with which the transverse end and intermediate walls ll and 15 of the checker work are vertically alined.

From the above description it will be seen that I have provided a very efticient construction of checker work which may be conveniently and economically produced or installed. Minor changes may be made without departing from the spirit and scope of the invention as claimed.

ll hat I claim as new is 1. Brick checker work construction comprising a pluralit of spaced parallel vertical longitudinal wal s, and spaced parallel end and intermediate transverse vertical walls disposed at right angles to said longitudinal walls to form vertical flues extending through the checker work, each longitudinal wall being composed of horizontal courses of bricks, each intermediate transverse Wall embodying vertically alined horizontal supporting bricks laid across alternate courses of the longitudinal walls in spaced opposed relation, and further horizontal bricks extending between and supported at their ends by alternate pairs of said opposed supporting bricks to leave communicating passages between adjacent ilues.

2. Brick checker work construction comprising a plurality of spaced parallel vertical lon itudinal walls, and spaced parallel end ancf intermediate transverse vertical walls disposed at right angles to said longitudinal walls to form vertical fines extending through the checker work, each longitudinal wall being composed of horizontal courses of bricks, each intermediate transverse wall embodying vertically alined horizontal supporting bricks laid across alternate courses of the longitudinal walls in spaced opposed relation, further horizontal bricks extending between and supported at their ends by alternate pairs of said opposed supporting bricks to leave communicating passages between adjacent fines, certain of the bricks of the longitudinal walls being disposed to abut opposite sides of the supporting bricks, and substantially all of the remaining bricks of said longitudinal walls being disposed in end to end abutting relation.

8. Brick checker work construction comprising a plurality of spaced parallel vertical longitudinal walls, and spaced parallel end and intermediate transverse vertical walls disposed at right angles to said longitudinal walls to form vertical fines extending through the checker work, each longitudinal wall being composed of horizontal courses of bricks, each intermediate transverse wall embodying vertically alined horizontal supporting bricks laid across alternate courses of the longitudinal walls in spaced opposed relation, further horizontal bricks extending between and supported at their ends by alternate pairs of said opposed supporting bricks to leave communicating passages between adjacent flues, each end transverse Wall embodying vertically alined horizontal supporting bricks laid across alternate courses of the longitudinal Walls in spaced opposed relation, and further horizontal bricks extending between and supported at their ends by each pair of opposed ones of said last named supporting bricks.

4. Brick checker work construction comprising a plurality of spaced parallel vertical longitudinal walls, and spaced parallel end and intermediate transverse vertical walls disposed at right angles to said longitudinal walls to form vertical flues extending through the checker work, each longitudinal well being composed of horizontal courses of bricks, each intermediate transverse wall embodying vertically alined horizontal supporting bricks laid across alternate courses of the longitudinal walls in spaced opposed relation, further horizontal bricks extending between and supported at their ends by alternate pairs of said opposed supporting bricks to leave communicating passages between adjacent flues each end transverse wall embodying vertically alined horizontal supporting bricks laid across alternate courses of the longitudinal Walls in spaced opposed relation, and further horizontal bricks extending between and supported at their ends by each pair of opposed ones of said last named supporting bricks, bricks being omitted at intervals in the next to the top course of each longitudinal Wall at opposite sides of each flue.

In testimony whereof I aflix my signature.

JULIUS M. BOCZEK. 

